196217228155536 has 405 divisors, whose sum is σ = 656667444798729. Its totient is φ = 54534771535104.

The previous prime is 196217228155477. The next prime is 196217228155567. The reversal of 196217228155536 is 635551822712691.

It is a happy number.

The square root of 196217228155536 is 14007756.

It is a perfect power (a square), and thus also a powerful number.

196217228155536 is a `hidden beast` number, since 1 + 9 + 6 + 2 + 1 + 72 + 2 + 8 + 1 + 5 + 553 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 175577870336400 + 20639357819136 = 13250580^2 + 4543056^2 .

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 43536103395 + ... + 43536107901.

Almost surely, 2^{196217228155536} is an apocalyptic number.

196217228155536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

196217228155536 is the 14007756-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 196217228155536

196217228155536 is an abundant number, since it is smaller than the sum of its proper divisors (460450216643193).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

196217228155536 is an frugal number, since it uses more digits than its factorization.

196217228155536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9116 (or 4556 counting only the distinct ones).

The product of its digits is 54432000, while the sum is 63.

The spelling of 196217228155536 in words is "one hundred ninety-six trillion, two hundred seventeen billion, two hundred twenty-eight million, one hundred fifty-five thousand, five hundred thirty-six".